Palaeozoic evolution of animal mouthparts


Authors: Klug C, Frey L, Pohle A, De Baets K, Korn D

Published in: Bulletin of Geosciences, volume 92, issue 4; pages: 511 - 524; Received 10 November 2016; Accepted in revised form 22 September 2017; Online 6 December 2017

Keywords: Gnathostomata, Cephalopoda, evolution, convergence, diversity, nekton, jaws,

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During the Palaeozoic, a diversification in modes of life occurred that included a wide range of predators. Major macroecological events include the Cambrian Explosion (including the Agronomic Substrate Revolution and the here introduced ’Ediacaran-Cambrian Mouthpart Armament’), the Great Ordovician Biodiversification Event, the Palaeozoic Plankton Revolution, the Siluro-Devonian Jaw Armament (newly introduced herein) and the Devonian Nekton Revolution. Here, we discuss the evolutionary advancement in oral equipment, i.e. the Palaeozoic evolution of mouthparts and jaws in a macroecological context. It appears that particularly the latest Neoproterozoic to Cambrian and the Silurian to Devonian were phases when important innovations in the evolution of oral structures occurred.


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